Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/02331

02331

ZIP 02331 is in Duxbury, Massachusetts, in Plymouth County; area codes 781 and 339; Eastern time. Duxbury has 2 ZIP codes; the other is 02332.

Type
No street area
Time zone
America/New_York
County
Plymouth
Coordinates
41.9705, -70.7014

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 02360, whose figures describe that area — not this ZIP code.

☼ Live from 02331 — Duxbury, MA

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Where 02331 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 02331
  • 🔢 Type 02331 into a pocket calculator and turn it upside down: IEEZO — not quite a word, sorry.
  • ➕ As a number, 2,331 = 3 × 3 × 7 × 37. Its digits add up to 9, a total 375 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100100011011
  • 🏠 Its numerical neighbours: 02330 (Carver, MA, 7 mi away) and 02332 (Duxbury, MA, 5 mi away).
  • 🔄 Backwards, 02331 becomes 13320 — and that is a real ZIP code: Cherry Valley, NY, 214 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (02133, 03231, 12033, 12303, 13032, 13203, …). The farthest-flung twin is 33102 in Miami, FL, 1,243 miles away.
  • 🧭 Farther north than 75% of all ZIP codes, and farther east than 97%.
  • 🎯1,457 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02331 and you would come out at 41.97°S, 109.30°E — 781 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 14m of daylight. Shortest: 9h 07m.
🌙 The sky over 02331 today
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Source: USGS.

Business and tax activity

Business establishments31This ZIP31
Employees138This ZIP138
Annual payroll$7,560,000This ZIP$7,560,000

Land area

ZIP codes near 02331

ZIPCityDistance
02361 Plymouth, MA 0.0 mi
02362 Plymouth, MA 1.9 mi
02364 Kingston, MA 2.4 mi
02332 Duxbury, MA 5.1 mi
02367 Plympton, MA 5.3 mi
02355 North Carver, MA 6.3 mi
02330 Carver, MA 7.0 mi
02360 Plymouth, MA 7.1 mi
02041 Green Harbor, MA 7.4 mi
02381 White Horse Beach, MA 7.7 mi

Find every ZIP code within 10 miles of 02331 →

Questions about this ZIP code

Where is ZIP code 02331?

02331 is in Duxbury, Massachusetts, in Plymouth County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 41.9705, -70.7014.

What county is 02331 in?

02331 lies in Plymouth County.

What area code is 02331?

Duxbury uses area codes 781 and 339, from NANPA's telephone records.

What time zone is 02331 in?

02331 uses America/New_York.

What ZIP codes are near 02331?

The closest are 02361 (0 mi), 02362 (1.9 mi), 02364 (2.4 mi), 02332 (5.1 mi) and 02367 (5.3 mi).

Is 02331 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “02331 ZIP Code — Duxbury, Massachusetts (Plymouth County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02331

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/02331.json

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